Potential GSoC Project Ideas

Filesystem extended attributes
- Generic VFS attributes layer
- Emulate attributes ala Darwin
- Allow filesystems to define their own attribute vop ops
- QUESTIONS: Attributes or subfiles? Subfiles are better! Attributes implemented on subfiles? What?

On-disk / Over-the-wire structure codegen
- Somewhat analogous to google protocol buffers / etc.
- Take a normalized definition of data, metadata, an operation and generate
  a structure, serialization routines and accessor routines for it/them
- Must be able to generate structs binary compatible with existing on-disk formats (warts)
- Should magically create formats that are 32/64bit agnostic OR fixup serializers/unserializers
- Accessor routines and thread safety? Do we make you hang these objects somewhere that
  you store your synchronization objects or allow you to include them?
- Build system integration?
- Would people use them?
- Potential targets: [HAMMER, UFS, HAMMER mirror streams, message passing, ...]

Asynchronous system call framework
- Probably best implemented as a message passing interface to kernel
  pass messages in, threads pick them up and execute, return through
  kevent notifications

Hardware virtualization extensions
- Make use of hardware virtualization extensions, if supported, to manage vmspaces

MPSAFE and Unify select/poll/kevent
- Coalesce all subsytems into kevent
- MPSAFE the whole mess and the wakeup path

Kernel VIRTUAL MACHINE
- opcode vm in kernel for various purposes?

I/O Diagnostic utilities
- A utility similar to top which displays I/O usage on a per-process basis
- Network, Disk